feat(ansible): inventory groups CRUD routes + templates + blueprint registration

steward/app.py

@@ -100,6 +100,7 @@ def create_app(
     from .dns.routes import dns_bp
     from .alerts.routes import alerts_bp
     from .ansible.routes import ansible_bp
+    from .ansible.inventory_routes import inventory_bp
     from .settings.routes import settings_bp
     from .audit.routes import audit_bp
 
@@ -110,6 +111,7 @@ def create_app(
     app.register_blueprint(dns_bp)
     app.register_blueprint(alerts_bp)
     app.register_blueprint(ansible_bp)
+    app.register_blueprint(inventory_bp)
     app.register_blueprint(settings_bp)
     app.register_blueprint(audit_bp)